A disk and volume firewall for macOS
Download MountBatten 1.01 (Universal) Purchase a Lifetime License Key ($4.99)MountBatten watches for disk mounting events as they happen, giving you control over which drives and disk images are allowed to mount
Create a zero-trust environment by blocking storage devices or disk images even if macOS would otherwise allow them to connect
MountBatten works with DMG disk images, making it useful for blocking installers and tightening control over untrusted media
Build rules using exact matches, partial matches, exclusions, or a Regex; target all media, disk images only, or physical disks only
When a rule matches, MountBatten can show an alert, display a notification, play a sound, flash the screen, launch an app, open a URL, or run AppleScript
Review recent activity in the built-in Event log
MountBatten is very lightweight and memory efficient, making it easy to leave running in the background
No data ever leaves your Mac; everything is stored and processed locally